There’s a targeted offer for Amex Delta Gold card members that will give you a 2,500 Skymiles bonus when you add an authorized user to your account.
Add an Additional Card Member to earn 2,500 bonus miles after your Additional Card Members spend $500 in purchases on their Cards in the following 3 months. All Additional Card Members must be 15 years or older, and must never have had a defaulted account with American Express.
It’s a nice small bonus, especially if you need some extra Delta miles. Keep in mind that you need to enter SSN for the authorized user and it will count towards Chase’s 5/24 rule.
Bonus Offer To earn the one-time 2,500 bonus miles, your Additional Card Member(s) must make $500 in purchases on their Additional Card(s) within 3 months, starting from the date that a new Additional Card is added to your Account. Purchases made by all of your Additional Card Members on your Account, including any Additional Card Members that you had before adding a new Additional Card Member to earn this bonus, will count toward the $500 spend requirement. Your purchases as the Basic Card Member will not count toward the $500 spend requirement. The 2,500 bonus miles will be credited to your account 6-8 weeks after you earn the bonus.